Leading marine scientist Palumbi takes us to the most extreme limits of the aquatic world - the fastest and deepest, the hottest and oldest creatures of the oceans. Diving into the icy Arctic and boiling hydrothermal vents, he exposes the eternal darkness of the deepest undersea trenches to show how marine life thrives against the odds.But these fragile ecosystems face new challenges: climate change and overfishing could pose the greatest threats yet to our planet’s tenacious marine life. Palumbi shares unforgettable stories of some of the most marvelous life forms on Earth and reveals surprising lessons of how we humans can learn to adapt to climate change.